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11. 发明专利

JP2002055196A METHOD FOR DISPOSAL OF RADIOACTIVE WASTE 失效
公开(公告)号：JP2002055196A
公开(公告)日：2002-02-20
申请号：JP2000241199
申请日：2000-08-09
申请人： TOSHIBA CORP
发明人： FUJITA REIKO , NAKAMURA HITOSHI , KONDO NARUHITO , MATSUBAYASHI YOSHIKAZU , TAMURA TOSHIYUKI , AKAI YOSHIE , MIKURA MICHITAKA , TODA MASAMI
IPC分类号： G21C19/44 , C02F11/12 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To provide a method whereby new waste accompanying decontamination is not discharged, by easily carrying out decontamination of radioactive nuclides or radioactive materials adhering to conductive waste. SOLUTION: The conductive waste to which radioactive nuclides and radioactive materials adhere is dipped in molten salt, and the radioactive materials or the surface of the waste are electrochemically dissolved and are collected from the molten salt. After the process of molten salt electrolysis 16 is finished. If the radioactive materials remain in the molten salt 19 after the decontamination, a reference concentration by which the molten salt 19 after the decontamination becomes radioactive waste is obtained by clearance level evaluation 21, and a process of squeezed electrolysis 22 is applied to reduce the level to the reference concentration or less.

12. 发明专利

JP2000348621A SEPARATING METHOD AND SEPARATING DEVICE FOR CATHODE-RAY TUBE 失效
公开(公告)号：JP2000348621A
公开(公告)日：2000-12-15
申请号：JP15838999
申请日：1999-06-04
申请人： TOSHIBA CORP
发明人： NITTO KOICHI , TAMURA TOSHIYUKI , NAGAYAMA KENICHI
IPC分类号： H01J9/50
摘要： PROBLEM TO BE SOLVED: To separate a used cathode-ray tube into a reusable/recyclable panel part and a funnel part in a short time without using chemicals, or the like. SOLUTION: According to this method, pulse laser light is made to irradiate vertically or obliquely the joining surfaces of a frit glass part 4 jointing a panel part 2 of a cathode-ray tube with a funnel part 3 thereof, thereby instantaneously decomposing/vaporizing the frit glass (ablation). The panel part 2 and the funnel part 3 are separated from each other by decomposing/removing at least a part of the frit glass part 4. Adjusting the polarization of the pulse laser light suppresses reflection by the panel part 2 or by the funnel part 3, and thus the energy of the laser light can be efficiently conveyed/supplied to the joining surfaces of the frit glass part 4.

13. 发明专利

JPH10288670A NON-CONTACT SURFACE CONTAMINATION INSPECTION METHOD AND SURFACE TREATMENT METHOD AND DEVICE 失效
公开(公告)号：JPH10288670A
公开(公告)日：1998-10-27
申请号：JP9779497
申请日：1997-04-15
申请人： TOSHIBA CORP
发明人： NITSUTOU KOUICHI , FUKAZAWA TAKUJI , TAMURA TOSHIYUKI , YAMAGUCHI YASUSHI , MATSUI MASAO
IPC分类号： G01N1/02 , B05D3/00 , B08B5/04 , G01N1/28 , G01T1/169 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To inspect the surface contamination of an object to be inspected without damaging a protection film such as a base material and a paint film and without expanding a contamination site. SOLUTION: A non-contact surface contamination inspection device 10 or a surface-treating device supports a head unit 15 so that it can travel relatively and freely for an inspection target 11. The head unit 15 is connected to a unit box via a flexible connection means. On the other hand, the head unit 15 has a laser beam irradiation means 19 for applying laser beams for inspecting surface to the object surface of the inspection target 11, a filter-capturing means 35 for detecting a bloom that left the object surface, and a bloom detection means 31 for detecting the captured bloom. In this case, a signal that is detected by the bloom detection means 31 is processed to specify the surface contamination site of the inspection target 11 and determine a surface contamination density with a dry method without any contact.

14. 发明专利

JPH10185843A HYDROGEN CONTENT MONITOR 失效
公开(公告)号：JPH10185843A
公开(公告)日：1998-07-14
申请号：JP35096196
申请日：1996-12-27
申请人： TOSHIBA CORP
发明人： FUKAZAWA TAKUJI , TAMURA TOSHIYUKI
IPC分类号： G01N23/204
摘要： PROBLEM TO BE SOLVED: To provide a hydrogen content monitor that can quantitatively determine, in a non-destructive manner, hydrogen contained in a metal waste being measuring object, which has radio activity and of which material is not clearly known. SOLUTION: The monitor 10 houses an object to be measured 14 in an internal closed space 13 and comprises a neutron reflector 12, which, is of such material as not containing hydrogen, a neutron source 16 provided in the closed space 13 in the neutron reflector 12, a neutron detector 11 provided in the closed space 13 in the neutron reflector 12, and a signal processing device 20, which signal-processes the neutron detection signal detected with the neutron detector 11, and, relating to the neutron detector 11, the object to be measured 14 is irradiated with fast neutrons from the neutron source 16, and the neutrons decelerated and scattered by the object 14 are measured, so that the hydrogen content of an object to be measured is quantitatively analyzed in a non- destructive manner.

15. 发明专利

JPH10123070A HYDROGEN CONTENT ANALYZER 失效
公开(公告)号：JPH10123070A
公开(公告)日：1998-05-15
申请号：JP27328096
申请日：1996-10-16
申请人： TOSHIBA CORP
发明人： TAMURA TOSHIYUKI , FUKAZAWA TAKUJI
IPC分类号： G01N23/222
摘要： PROBLEM TO BE SOLVED: To provide a hydrogen content analyzer which can determine hydrogen contained in a highly radioactive sample, to be measured, with an unclear material kind and with an unclear density and which uses an n.γ method. SOLUTION: A sample 1 to be measured is housed inside a neutron moderator system 2, and a neutron source 3 is arranged inside the neutron moderator system 2. A γ-ray collimator 5 and a γ-ray detector 4 which are surrounded by a γ-ray shielding material 7 are arranged so as to face the neutron moderator system 2. The sample 1 to be measured is turned and scanned. A material which contains hydrogen is not used for a neutron moderator 2c in a direction in which the γ-ray collimator 5 is anticipated, a peak to which attention is to be paid is 2.22MeV. A γ-ray filter 6 is put into the γ-ray collimator 5, and low-energy γ-rays are attemulated. The γ-ray detector 4 is formed to be of an anti-Compton type so as to remove the Compton effect and the escape peak of high-energy-γ-rays. While the counted number of γ-rays of Zr and that of γ-rays of Fe are used, a material (neutron absorption) is discriminated and corrected. By a pulsed neutron irradiation method, the S/N ratio of a hydrogen content analyzer is increased.

16. 发明专利

JPH0580185A NUCLEAR REACTOR OUTPUT MEASURING DEVICE 失效
公开(公告)号：JPH0580185A
公开(公告)日：1993-04-02
申请号：JP24345891
申请日：1991-09-24
申请人： TOSHIBA CORP
发明人： SEKI EIJI , TAMURA TOSHIYUKI , YOSHIDA TOSHIBUMI , SANO YUJI , SATO MICHIO , FUKUMOTO AKIRA , TAI ICHIRO , ITO TOSHIAKI
IPC分类号： G21C17/108 , G21C17/10
摘要： PURPOSE:To suppress the costs and prevent the structure from becoming complicated by reducing the number of radiation sensors and measuring circuits to a great extent. CONSTITUTION:In a reactor core 1, a sensor aggregate 11 is set which consists of a guide tube 2, a plurality of self-output emitting type radiation sensors 3, and a protection tube 4. A radiation sensor 7 for correction travels within the guide tube 2. The output signal currents of the sensors 3 are fed to a first current/voltage converter 5 and converted into electrical signal to be passed to a correction circuit 6. The output signal current of the corrective sensor 7 is fed to a second current/voltage converter 8. The voltage signal from the second converter 8 is fed to an integrating circuit 10 to undergo integral operation, and the output therefrom is passed to the correction circuit 6. The circuit 6 performs a correction so that the sensors 3 give an output corresponding to the value after integration made by the integrating circuit 10 and thereupon an output is emitted.

17. 发明专利

JPS6120846A Instrument for measuring concentration of fissionable material 失效
标题翻译：用于测量可膨胀材料浓度的仪器
公开(公告)号：JPS6120846A
公开(公告)日：1986-01-29
申请号：JP14199484
申请日：1984-07-09
申请人： Nippon Atom Ind Group Co Ltd , Toshiba Corp
发明人： HIGUCHI SHINICHI , TAMURA TOSHIYUKI
IPC分类号： G01N23/221 , G01N23/222 , G21C17/06
CPC分类号： G21C17/06 , G01N23/222 , G01N2223/074 , G01N2223/106 , G01N2223/625
摘要： PURPOSE:To measure background without requiring intricate procedures by segmenting the housing of a titled instrument into two chambers by a partition wall, contg. a neutron source and decelerating material into one chamber and contg. a sample into the other chamber. CONSTITUTION:The inside of the housing 1 of the measuring instrument is segmented to two large and small chambers by the partition wall 2. Water 4 which is the neutron decelerating material and the neutron source 5 are contained in the large chamber 3 and the sample 7 is contained in the small chamber 6. The thermal neutrons among the neutrons from the source 8 are absorbed to a thermal neutron absorbing plate 9 when the plate 9 is inserted into a guide 8 for inserting the thermal neutron absorbing plate and therefore only the neutrons which are too fast to generate nuclear fission arrive at the sample 7. A detector 10 in this state measures the emission neutrons of the sample and the neutrons which are released from the source 5 and are not decelerated to the thermal neutrons, i.e., background. The measured value relating only to the concn. of the fissionable material in the sample is obtd. by removing the plate 9, measuring the neutrons by the detector 10 and subtracting the background therefrom.
摘要翻译：目的：为了测量背景，不需要复杂的程序，通过将隔墙的标准仪器的外壳分成两个室，中子源和减速材料进入一个室，样品进入另一个室。构成：测量仪器的壳体1的内部通过分隔壁2分割成两个大小室。作为中子减速材料的水4和中子源5包含在大室3和样品7中包含在小室6中。当板9插入到用于插入热中子吸收板的引导件8中时，来自源8的中子之间的热中子被吸收到热中子吸收板9，因此只有中子太快而不能产生核裂变到达样品7.在该状态下的检测器10测量样品的发射中子和从源5释放并且不被减速到热中子（即背景）的中子。测量值仅与浓度相关的样品中的可裂变材料。通过移除板9，通过检测器10测量中子并减去其背景。

18. 发明专利

JPS58211682A Nondestructive measurement device for nuclear substance 失效
标题翻译：用于核物质的非结合测量装置
公开(公告)号：JPS58211682A
公开(公告)日：1983-12-09
申请号：JP9317082
申请日：1982-06-02
申请人： Nippon Atom Ind Group Co Ltd , Toshiba Corp
发明人： HIGUCHI SHINICHI , TAMURA TOSHIYUKI
IPC分类号： G01T1/167 , G01T3/00 , G01T3/02
摘要： PURPOSE: To perform measurement accurately by applying a lining formed of a thermal neutron absorbing material on the inner peripheral surface of a vessel made of a thermal neutron moderating material which has a thermal neutron detector buried in the wall body thereof.
CONSTITUTION: In the peripheral wall 1a of the main body 1 of a cylindrical vessel formed of a moderating material, thermal neutron detectors 2 being slender in the axial direction of the main body are buried in distribution in the peripheral direction, and in the bottom surface wall 1b thereof, slender thermal neutron detectors 3 are buried in parallel. Moreover, a lining 4 formed of a thermal neutron absorbing material having a large thermal neutron absorbing sectional area, such as B, Cd, Sm, Sm
2 O
3 , Eu, Eu
2 O
3 , Gd, Dy and Dy
2 O
3 , for instance, is applied on the inner peripheral surface of the main body 1.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：通过在由热中子调节材料制成的容器的内周面上施加由热中子吸收材料形成的衬里，使其具有埋藏在其壁体中的热中子检测器来精确地进行测量。构成：在由慢化材料形成的圆筒形容器的主体1的周壁1a中，沿主体的轴向细长的热中子检测器2沿周向被分布，并且在底面壁1b，细长的热中子检测器3被并入。此外，例如由B，Cd，Sm，Sm2O3，Eu，Eu2O3，Gd，Dy和Dy2O3等热中子吸收截面积大的热中子吸收材料形成的衬里4被施加在内周主体表面1。

19. 发明专利

JP2000088966A alpha RADIOACTIVITY MEASURING DEVICE AND METHOD 失效
公开(公告)号：JP2000088966A
公开(公告)日：2000-03-31
申请号：JP26342998
申请日：1998-09-17
申请人： TOSHIBA CORP
发明人： SANO AKIRA , TAMURA TOSHIYUKI , WADA MIKIO
IPC分类号： G01T1/167 , G01T1/205 , G01T7/00
摘要： PROBLEM TO BE SOLVED: To provide a measuring device and method for α radioactivity capable of accurately quantifying αradioactivity even for a measuring object with a complex shape. SOLUTION: A measuring object 1 is contained and gas 4 including a material emitting light by α-ray is charged in an air-tight vessel 2. The light emitted by α-ray in the air-tight vessel 2 is detected with a photoelectric conversion sensors 5a to 5e and converted to electric signal, the electric signals from the photoelectric conversion sensors 5 are converted to pulse signals by a measuring circuit system 6 and the pulse number is counted. A data processing computer 7 calculates α radioactivity based on the pulse number obtained with the measuring circuit system.

20. 发明专利

JPH06294871A RADIATION INTENSITY DISTRIBUTION MEASURING INSTRUMENT 失效
公开(公告)号：JPH06294871A
公开(公告)日：1994-10-21
申请号：JP8282793
申请日：1993-04-09
申请人： TOSHIBA CORP
发明人： YASUOKA MAKOTO , TAMURA TOSHIYUKI , WATANABE TOMIO
IPC分类号： G01T1/00 , G01T1/22 , G01T5/08 , G01T1/06
摘要： PURPOSE:To provide a radiation intensity distribution device which can measure a long distance and has an improved position resolution using to an optical fiber and based on the time difference of light signal propagated inside it. CONSTITUTION:A title measuring instrument 1 comprises an optical fiber 2 which generates Cherenkov light when electrons emitted by radiation pass through the fiber 2 and transmits the light, photodetectors 3a and 3b which are installed at both edges of the optical fiber 2 for detecting the light signal propagated by the optical fiber 2, and a time difference measuring instrument 4 for measuring the time interval of the signals from the photodetectors 3a and 3b and then accumulating it as time data. Further, it also comprises a computer 5 for analyzing data which analyzes the accumulated time data and then calculates the incidence position and intensity of the radiation based on the time difference of light signals arriving at the photodetectors 3a and 3b.

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